区块链考试题及答案,区块链考试的答案

Ⅰ Blockchain is not a multiple-choice database code

Blockchain is not an application or a scam. According to the query of relevant public information: Blockchain is a permanent, irreversible record generated by superimposing encrypted data (blocks) in chronological order (chain). In a sense, blockchain technology is a kind of technology in the Internet era. New information delivery technologies.

II What are the problems faced by enterprises in applying blockchain

1. What exactly do you want to accomplish?

Look carefully at your requirements and ask Do you really need blockchain? Do you need additional guarantees for the protocol provided by the blockchain, or do you just need a distributed database?

2. How much do you trust your partners?

Untrusted business partners can severely impact blockchain projects. Moreover, they may also affect the blockchain’s proof-of-work or proof-of-stake.

3. How public or open do you need to be?

Who needs to participate in your blockchain? There is a continuum between public blockchains and Bitcoin or Ethereum, The smallest, most carefully controlled blockchain. I can imagine some special-purpose public blockchains, such as power microgrids. I can imagine blockchain in financial services serving only a small group of partners and being private in nature. A blockchain that only serves one organization may look like a blockchain, but it has no value.

4. What are your data integration issues?

The biggest issue facing enterprise blockchain may not be the protocol, but integrating all the data used by blockchain participants Legacy data formats and data structures. Healthcare blockchain is a good example. There are hundreds of medical record formats in use, and any medical blockchain will have to do some extra work to handle them. Any blockchain that spans enterprise boundaries (or even blockchains within enterprise boundaries) will need to deal with data integration issues that can be more difficult to solve than building the blockchain itself.

5. If you needed “miners”, who would they be and how would you compensate them?

In most current blockchains, including Bitcoin and In Ethereum, "miners" are all about validating the consistency of the blockchain and adding blocks. They won't do this work for free. Cryptocurrency ICOs are extremely popular, and it's easy to pay miners with cryptocurrency (after all, that's what Bitcoin and Ethereum do), but it's hard to imagine enterprise blockchain projects doing the same.

6. What are your performance requirements? How will you meet them?

The Bitcoin and Ethereum blockchains currently process approximately 12 transactions per second. For many enterprise applications, this is too slow, by orders of magnitude. You need to consider what performance you need and how you willHow to achieve. There are many possible solutions, including Bitcoin’s Lightning Network, which replaces the computationally intensive “proof of work” performed by miners, and permissioned blockchains such as Hyperledger’s Fabric.

7. Are there any legal issues?

Recently, I saw several people asking whether blockchain applications can comply with GDPR (General Data Protection Regulation) and others Regulation. This is undoubtedly uncharted territory. I think the answer is that blockchain cannot comply; the answer will depend on the data you store in the blockchain, how the data is used, and how private or public the blockchain is.

Ⅲ What is the Blockchain 1+X Certificate exam?

The Blockchain 1+X Certificate exam content is as follows:

Blockchain 1+X Certificate Assessment The content mainly includes two parts: theoretical assessment and practical assessment. Take Shijiazhuang Vocational and Technical College as an example: the blockchain exam covers detailed content such as blockchain system application operations, blockchain business analysis and design, business planning, business development implementation, and business optimization.

The meaning of Organizational Blockchain 1+X:

“1+X” Blockchain System Application and Design (Intermediate) Vocational Skills Level Certificate The successful holding of training and certification examinations will help promote the "three education reforms" and play a positive role in assisting the cultivation of high-quality compound blockchain talents, improving students' employment competitiveness, and serving the economic development of the blockchain industry.

Reference for the above content: Shijiazhuang Vocational and Technical College-1+X Blockchain System Exam

IV Blockchain is the answer to the problem of risk control system

Finance has three elements: security, profitability, and liquidity

And these three have one thing in common, that is, the conflict between the present and the future in space and time. Conflict is an unstable factor that must be restrained through the design of power, and the restraint of this power design is control. This control process corresponds to the principle of equivalent exchange, or conflict defensive design. Original link

Let’s take a look at the principles of this defensive design:

First, we need to do an evaluation. Let’s first look at the definition of risk assessment:

Before or after a risk event occurs (but it has not yet ended), the impact and possibility of losses caused by the event to people’s lives, lives, property, etc. quantitative assessment work.

In other words, risk assessment is to quantitatively evaluate the impact of an event or thingpossible impact or loss. From the perspective of information security, risk assessment is an assessment of the threats, weaknesses, and impacts faced by information assets (i.e., the set of information about an event or thing), as well as the possibility of risks caused by the combined effect of the three. sexual assessment. As the basis of risk management, risk assessment is an important way for organizations to determine information security needs and is part of the planning process of the organization's information security management system. We need to realize that people have motivations, while machines and programs only have instructions. This is an important difference between humans and machines.

The following are the problems faced in the process management of defensive design of risk control:

What is the object (or asset) to be protected? What is its direct and indirect value?

What potential threats do assets face? What causes the threat? How likely is it that the threat will occur?

What weaknesses exist in the asset that could be exploited by threats? What about ease of exploitation?

Once a threat event occurs, what kind of losses will the organization suffer or what negative impacts will it face?

What security measures should the organization take to minimize the losses caused by risks? ?

The process of solving the above problems is the process of risk assessment.

When conducting risk assessment, there are several correspondences that must be considered:

Each asset may face multiple threats

Threat sources (threat agents) There may be more than one

Each threat may exploit one or more system weaknesses

The risk control system is a system about motivation and process management. Motivation and process management are the basic logic of the risk control system. Have you noticed that these are all human designs. Human design is based on knowledge structure and empirical judgment. Based on the principles of cases and statistics, there is due diligence.

Yet inquiry is rooted in the uncertainty of space and time; inquiry is motivated by the desire to bring the future and the present into agreement. Please note that this is still a human design. Just as all investigation reports are written by people, the information and data that people refer to are also written by people. ThatWell, here comes the point, can the programs set by humans be replaced by technology? This question may have been unanswerable in the past, but now it has an answer.

The answer may be blockchain.